package org.bouncycastle.asn1;

import java.io.IOException;
import java.util.Enumeration;

@SuppressWarnings("rawtypes")
class LazyDERConstructionEnumeration implements Enumeration {
    private ASN1InputStream aIn;
    private Object nextObj;

    public LazyDERConstructionEnumeration(byte[] encoded) {
        aIn = new ASN1InputStream(encoded, true);
        nextObj = readObject();
    }

    public boolean hasMoreElements() {
        return nextObj != null;
    }

    public Object nextElement() {
        Object o = nextObj;

        nextObj = readObject();

        return o;
    }

    private Object readObject() {
        try {
            return aIn.readObject();
        } catch (IOException e) {
            throw new ASN1ParsingException("malformed DER construction: " + e,
                    e);
        }
    }
}
